diff --git a/.gitignore b/.gitignore
index 4eb71e5..6c6fb46 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,4 +24,5 @@ plugins/**/
 !plugins/banwords/**/
 !plugins/hello
 !plugins/role
-!plugins/keyword
\ No newline at end of file
+!plugins/keyword
+!plugins/linkai
\ No newline at end of file
diff --git a/bot/linkai/link_ai_bot.py b/bot/linkai/link_ai_bot.py
index 804b53b..8b8ca8b 100644
--- a/bot/linkai/link_ai_bot.py
+++ b/bot/linkai/link_ai_bot.py
@@ -52,7 +52,7 @@ class LinkAIBot(Bot, OpenAIImage):
                 logger.info(f"[LINKAI] won't set appcode because a plugin ({context['generate_breaked_by']}) affected the context")
                 app_code = None
             else:
-                app_code = conf().get("linkai_app_code")
+                app_code = context.kwargs.get("app_code") or conf().get("linkai_app_code")
             linkai_api_key = conf().get("linkai_api_key")
 
             session_id = context["session_id"]
diff --git a/plugins/linkai/__init__.py b/plugins/linkai/__init__.py
new file mode 100644
index 0000000..e7414be
--- /dev/null
+++ b/plugins/linkai/__init__.py
@@ -0,0 +1 @@
+from .linkai import *
diff --git a/plugins/linkai/linkai.py b/plugins/linkai/linkai.py
new file mode 100644
index 0000000..8698ad5
--- /dev/null
+++ b/plugins/linkai/linkai.py
@@ -0,0 +1,93 @@
+import asyncio
+import json
+import threading
+from concurrent.futures import ThreadPoolExecutor
+
+import plugins
+from bridge.context import ContextType
+from bridge.reply import Reply, ReplyType
+from channel.chat_message import ChatMessage
+from common.log import logger
+from config import conf
+from plugins import *
+from .midjourney import MJBot, TaskType
+
+# 任务线程池
+task_thread_pool = ThreadPoolExecutor(max_workers=4)
+
+
+@plugins.register(
+    name="linkai",
+    desc="A plugin that supports knowledge base and midjourney drawing.",
+    version="0.1.0",
+    author="https://link-ai.tech",
+)
+class LinkAI(Plugin):
+    def __init__(self):
+        super().__init__()
+        self.handlers[Event.ON_HANDLE_CONTEXT] = self.on_handle_context
+        self.config = super().load_config()
+        self.mj_bot = MJBot(self.config.get("midjourney"))
+        logger.info("[LinkAI] inited")
+
+    def on_handle_context(self, e_context: EventContext):
+        """
+        消息处理逻辑
+        :param e_context: 消息上下文
+        """
+        context = e_context['context']
+        if context.type not in [ContextType.TEXT, ContextType.IMAGE]:
+            # filter content no need solve
+            return
+
+        mj_type = self.mj_bot.judge_mj_task_type(e_context)
+        if mj_type:
+            # MJ作图任务处理
+            self.mj_bot.process_mj_task(mj_type, e_context)
+            return
+
+        if self._is_chat_task(e_context):
+            self._process_chat_task(e_context)
+
+    # LinkAI 对话任务处理
+    def _is_chat_task(self, e_context: EventContext):
+        context = e_context['context']
+        # 群聊应用管理
+        return self.config.get("knowledge_base") and context.kwargs.get("isgroup")
+
+    def _process_chat_task(self, e_context: EventContext):
+        """
+        处理LinkAI对话任务
+        :param e_context: 对话上下文
+        """
+        context = e_context['context']
+        # 群聊应用管理
+        group_name = context.kwargs.get("msg").from_user_nickname
+        app_code = self._fetch_group_app_code(group_name)
+        if app_code:
+            context.kwargs['app_code'] = app_code
+
+    def _fetch_group_app_code(self, group_name: str) -> str:
+        """
+        根据群聊名称获取对应的应用code
+        :param group_name: 群聊名称
+        :return: 应用code
+        """
+        knowledge_base_config = self.config.get("knowledge_base")
+        if knowledge_base_config and knowledge_base_config.get("group_mapping"):
+            app_code = knowledge_base_config.get("group_mapping").get(group_name) \
+                       or knowledge_base_config.get("group_mapping").get("ALL_GROUP")
+            return app_code
+
+    def get_help_text(self, verbose=False, **kwargs):
+        trigger_prefix = conf().get("plugin_trigger_prefix", "$")
+        help_text = "利用midjourney来画图。\n"
+        if not verbose:
+            return help_text
+        help_text += f"{trigger_prefix}mj 描述词1,描述词2 ... ： 利用描述词作画，参数请放在提示词之后。\n{trigger_prefix}mjimage 描述词1,描述词2 ... ： 利用描述词进行图生图，参数请放在提示词之后。\n{trigger_prefix}mjr ID: 对指定ID消息重新生成图片。\n{trigger_prefix}mju ID 图片序号: 对指定ID消息中的第x张图片进行放大。\n{trigger_prefix}mjv ID 图片序号: 对指定ID消息中的第x张图片进行变换。\n例如：\n\"{trigger_prefix}mj a little cat, white --ar 9:16\"\n\"{trigger_prefix}mjimage a white cat --ar 9:16\"\n\"{trigger_prefix}mju 1105592717188272288 2\""
+        return help_text
+
+    def _set_reply_text(self, content: str, e_context: EventContext, level: ReplyType=ReplyType.ERROR):
+        reply = Reply(level, content)
+        e_context["reply"] = reply
+        e_context.action = EventAction.BREAK_PASS
diff --git a/plugins/linkai/midjourney.py b/plugins/linkai/midjourney.py
new file mode 100644
index 0000000..c7c6c35
--- /dev/null
+++ b/plugins/linkai/midjourney.py
@@ -0,0 +1,256 @@
+from enum import Enum
+from config import conf
+from common.log import logger
+import requests
+import threading
+import time
+from bridge.reply import Reply, ReplyType
+import aiohttp
+import asyncio
+from bridge.context import ContextType
+from plugins import EventContext, EventAction
+
+
+class TaskType(Enum):
+    GENERATE = "generate"
+    UPSCALE = "upscale"
+    VARIATION = "variation"
+    RESET = "reset"
+
+
+class Status(Enum):
+    PENDING = "pending"
+    FINISHED = "finished"
+    EXPIRED = "expired"
+    ABORTED = "aborted"
+
+    def __str__(self):
+        return self.name
+
+
+class MJTask:
+    def __init__(self, id, user_id: str, task_type: TaskType, raw_prompt=None, expires: int=60*30, status=Status.PENDING):
+        self.id = id
+        self.user_id = user_id
+        self.task_type = task_type
+        self.raw_prompt = raw_prompt
+        self.send_func = None  # send_func(img_url)
+        self.expiry_time = time.time() + expires
+        self.status = status
+        self.img_url = None  # url
+        self.img_id = None
+
+    def __str__(self):
+        return f"id={self.id}, user_id={self.user_id}, task_type={self.task_type}, status={self.status}, img_id={self.img_id}"
+
+# midjourney bot
+class MJBot:
+    def __init__(self, config):
+        self.base_url = "https://api.link-ai.chat/v1/img/midjourney"
+        # self.base_url = "http://127.0.0.1:8911/v1/img/midjourney"
+        self.headers = {"Authorization": "Bearer " + conf().get("linkai_api_key")}
+        self.config = config
+        self.tasks = {}
+        self.temp_dict = {}
+        self.tasks_lock = threading.Lock()
+        self.event_loop = asyncio.new_event_loop()
+        threading.Thread(name="mj-check-thread", target=self._run_loop, args=(self.event_loop,)).start()
+
+    def judge_mj_task_type(self, e_context: EventContext) -> TaskType:
+        """
+        判断MJ任务的类型
+        :param e_context: 上下文
+        :return: 任务类型枚举
+        """
+        trigger_prefix = conf().get("plugin_trigger_prefix", "$")
+        context = e_context['context']
+        if context.type == ContextType.TEXT:
+            if self.config and self.config.get("enabled"):
+                cmd_list = context.content.split(maxsplit=1)
+                if cmd_list[0].lower() == f"{trigger_prefix}mj":
+                    return TaskType.GENERATE
+                elif cmd_list[0].lower() == f"{trigger_prefix}mju":
+                    return TaskType.UPSCALE
+                # elif cmd_list[0].lower() == f"{trigger_prefix}mjv":
+                #     return TaskType.VARIATION
+                # elif cmd_list[0].lower() == f"{trigger_prefix}mjr":
+                #     return TaskType.RESET
+
+    def process_mj_task(self, mj_type: TaskType, e_context: EventContext):
+        """
+        处理mj任务
+        :param mj_type: mj任务类型
+        :param e_context: 对话上下文
+        """
+        context = e_context['context']
+        session_id = context["session_id"]
+        cmd = context.content.split(maxsplit=1)
+        if len(cmd) == 1:
+            self._set_reply_text(self.get_help_text(verbose=True), e_context, level=ReplyType.ERROR)
+            return
+
+        if mj_type == TaskType.GENERATE:
+            # 图片生成
+            raw_prompt = cmd[1]
+            reply = self.generate(raw_prompt, session_id, e_context)
+            e_context['reply'] = reply
+            e_context.action = EventAction.BREAK_PASS
+            return
+
+        elif mj_type == TaskType.UPSCALE:
+            # 图片放大
+            clist = cmd[1].split()
+            if len(clist) < 2:
+                self._set_reply_text(f"{cmd[0]} 命令缺少参数", e_context)
+                return
+            img_id = clist[0]
+            index = int(clist[1])
+            if index < 1 or index > 4:
+                self._set_reply_text(f"图片序号 {index} 错误，应在 1 至 4 之间", e_context)
+                return
+            key = f"{TaskType.UPSCALE.name}_{img_id}_{index}"
+            if self.temp_dict.get(key):
+                self._set_reply_text(f"第 {index} 张图片已经放大过了", e_context)
+                return
+            # 图片放大操作
+            reply = self.upscale(session_id, img_id, index, e_context)
+            e_context['reply'] = reply
+            e_context.action = EventAction.BREAK_PASS
+            return
+
+        else:
+            self._set_reply_text(f"暂不支持该命令", e_context)
+
+    def generate(self, prompt: str, user_id: str, e_context: EventContext) -> Reply:
+        """
+        图片生成
+        :param prompt: 提示词
+        :param user_id: 用户id
+        :return: 任务ID
+        """
+        logger.info(f"[MJ] image generate, prompt={prompt}")
+        body = {"prompt": prompt}
+        res = requests.post(url=self.base_url + "/generate", json=body, headers=self.headers)
+        if res.status_code == 200:
+            res = res.json()
+            logger.debug(f"[MJ] image generate, res={res}")
+            if res.get("code") == 200:
+                task_id = res.get("data").get("taskId")
+                real_prompt = res.get("data").get("realPrompt")
+                content = f"🚀你的作品将在1~2分钟左右完成，请耐心等待\n- - - - - - - - -\n"
+                if real_prompt:
+                    content += f"初始prompt: {prompt}\n转换后prompt: {real_prompt}"
+                else:
+                    content += f"prompt: {prompt}"
+                reply = Reply(ReplyType.INFO, content)
+                task = MJTask(id=task_id, status=Status.PENDING, raw_prompt=prompt, user_id=user_id, task_type=TaskType.GENERATE)
+                # put to memory dict
+                self.tasks[task.id] = task
+                asyncio.run_coroutine_threadsafe(self.check_task(task, e_context), self.event_loop)
+                return reply
+        else:
+            res_json = res.json()
+            logger.error(f"[MJ] generate error, msg={res_json.get('message')}, status_code={res.status_code}")
+            reply = Reply(ReplyType.ERROR, "图片生成失败，请稍后再试")
+            return reply
+
+    def upscale(self, user_id: str, img_id: str, index: int, e_context: EventContext) -> Reply:
+        logger.info(f"[MJ] image upscale, img_id={img_id}, index={index}")
+        body = {"type": TaskType.UPSCALE.name, "imgId": img_id, "index": index}
+        res = requests.post(url=self.base_url + "/operate", json=body, headers=self.headers)
+        if res.status_code == 200:
+            res = res.json()
+            logger.info(res)
+            if res.get("code") == 200:
+                task_id = res.get("data").get("taskId")
+                content = f"🔎图片正在放大中，请耐心等待"
+                reply = Reply(ReplyType.INFO, content)
+                task = MJTask(id=task_id, status=Status.PENDING, user_id=user_id, task_type=TaskType.UPSCALE)
+                # put to memory dict
+                self.tasks[task.id] = task
+                key = f"{TaskType.UPSCALE.name}_{img_id}_{index}"
+                self.temp_dict[key] = True
+                asyncio.run_coroutine_threadsafe(self.check_task(task, e_context), self.event_loop)
+                return reply
+        else:
+            error_msg = ""
+            if res.status_code == 461:
+                error_msg = "请输入正确的图片ID"
+            res_json = res.json()
+            logger.error(f"[MJ] upscale error, msg={res_json.get('message')}, status_code={res.status_code}")
+            reply = Reply(ReplyType.ERROR, error_msg or "图片生成失败，请稍后再试")
+            return reply
+
+    async def check_task(self, task: MJTask, e_context: EventContext):
+        max_retry_time = 80
+        while max_retry_time > 0:
+            async with aiohttp.ClientSession() as session:
+                url = f"{self.base_url}/tasks/{task.id}"
+                async with session.get(url, headers=self.headers) as res:
+                    if res.status == 200:
+                        res_json = await res.json()
+                        logger.debug(f"[MJ] task check res, task_id={task.id}, status={res.status}, "
+                                     f"data={res_json.get('data')}, thread={threading.current_thread().name}")
+                        if res_json.get("data") and res_json.get("data").get("status") == Status.FINISHED.name:
+                            # process success res
+                            self._process_success_task(task, res_json.get("data"), e_context)
+                            return
+                    else:
+                        logger.warn(f"[MJ] image check error, status_code={res.status}")
+                        max_retry_time -= 20
+            await asyncio.sleep(10)
+            max_retry_time -= 1
+        logger.warn("[MJ] end from poll")
+
+    def _process_success_task(self, task: MJTask, res: dict, e_context: EventContext):
+        """
+        处理任务成功的结果
+        :param task: MJ任务
+        :param res: 请求结果
+        :param e_context: 对话上下文
+        """
+        # channel send img
+        task.status = Status.FINISHED
+        task.img_id = res.get("imgId")
+        task.img_url = res.get("imgUrl")
+        logger.info(f"[MJ] task success, task_id={task.id}, img_id={task.img_id}, img_url={task.img_url}")
+
+        # send img
+        reply = Reply(ReplyType.IMAGE_URL, task.img_url)
+        channel = e_context["channel"]
+        channel._send(reply, e_context["context"])
+
+        # send info
+        trigger_prefix = conf().get("plugin_trigger_prefix", "$")
+        text = ""
+        if task.task_type == TaskType.GENERATE:
+            text = f"🎨绘画完成!\nprompt: {task.raw_prompt}\n- - - - - - - - -\n图片ID: {task.img_id}"
+            text += f"\n\n🔎可使用 {trigger_prefix}mju 命令放大指定图片\n"
+            text += f"例如：\n{trigger_prefix}mju {task.img_id} 1"
+            reply = Reply(ReplyType.INFO, text)
+            channel._send(reply, e_context["context"])
+
+        self._print_tasks()
+        return
+
+    def _run_loop(self, loop: asyncio.BaseEventLoop):
+        loop.run_forever()
+        loop.stop()
+
+    def _print_tasks(self):
+        for id in self.tasks:
+            logger.debug(f"[MJ] current task: {self.tasks[id]}")
+
+
+    def get_help_text(self, verbose=False, **kwargs):
+        trigger_prefix = conf().get("plugin_trigger_prefix", "$")
+        help_text = "利用midjourney来画图。\n"
+        if not verbose:
+            return help_text
+        help_text += f"{trigger_prefix}mj 描述词1,描述词2 ... ： 利用描述词作画，参数请放在提示词之后。\n{trigger_prefix}mjimage 描述词1,描述词2 ... ： 利用描述词进行图生图，参数请放在提示词之后。\n{trigger_prefix}mjr ID: 对指定ID消息重新生成图片。\n{trigger_prefix}mju ID 图片序号: 对指定ID消息中的第x张图片进行放大。\n{trigger_prefix}mjv ID 图片序号: 对指定ID消息中的第x张图片进行变换。\n例如：\n\"{trigger_prefix}mj a little cat, white --ar 9:16\"\n\"{trigger_prefix}mjimage a white cat --ar 9:16\"\n\"{trigger_prefix}mju 1105592717188272288 2\""
+        return help_text
+
+    def _set_reply_text(self, content: str, e_context: EventContext, level: ReplyType=ReplyType.ERROR):
+        reply = Reply(level, content)
+        e_context["reply"] = reply
+        e_context.action = EventAction.BREAK_PASS
\ No newline at end of file